Lyons, A. , Oren, D., Roger, T., Savinov, V., Valente, J. , Vezzoli, S., Zheludev, N. I., Segev, M. and Faccio, D. (2019) Coherent metamaterial absorption of two-photon states with 40% efficiency. Physical Review A: Atomic, Molecular and Optical Physics, 99(1), 011801(R). (doi: 10.1103/physreva.99.011801)
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Abstract
Multiphoton absorption processes have a nonlinear dependence on the amplitude of the incident optical field, i.e., the number of photons. However, multiphoton absorption is generally weak and multiphoton events occur with extremely low probability. Consequently, it is extremely challenging to engineer quantum nonlinear devices that operate at the single photon level and the majority of quantum technologies have to rely on single photon interactions. Here we demonstrate experimentally and theoretically that exploiting coherent absorption of N = 2 NOON states makes it possible to enhance the number of two-photon states that are absorbed by at most a factor of 2 with respect to a linear absorption process. An absorbing metasurface placed inside a Sagnac-style interferometer into which we inject an N = 2 NOON state, exhibits two-photon absorption with 40.5 % efficiency, close to the theoretical maximum. This high probability of simultaneous absorption of two photons holds the promise for applications in fields that require multiphoton upconversion but are hindered by high peak intensities.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Vezzoli, Dr Stefano and Lyons, Dr Ashley and Faccio, Professor Daniele and Valente, Dr Joao |
Authors: | Lyons, A., Oren, D., Roger, T., Savinov, V., Valente, J., Vezzoli, S., Zheludev, N. I., Segev, M., and Faccio, D. |
College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering College of Science and Engineering > School of Physics and Astronomy |
Journal Name: | Physical Review A: Atomic, Molecular and Optical Physics |
Publisher: | American Physical Society |
ISSN: | 2469-9926 |
ISSN (Online): | 2469-9934 |
Published Online: | 14 January 2019 |
Copyright Holders: | Copyright © 2019 American Physical Society |
First Published: | First published in Physical Review A 99(1): 011801(R) |
Publisher Policy: | Reproduced in accordance with the publisher copyright policy |
Related URLs: | |
Data DOI: | 10.5525/gla.researchdata.721 |
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